Nginx SSL/TLS configuration for "A+" Qualys SSL Labs rating

nginx-tls.conf

#
# Name: nginx-tls.conf
# Auth: Gavin Lloyd <gavinhungry@gmail.com>
# Modified: Florian Paul Hoberg <florian [at] hoberg.ch>
# Desc: Nginx SSL/TLS configuration for "A+" Qualys SSL Labs rating
#
# Enables HTTP2, PFS, HSTS and OCSP stapling. Configuration options not related
# to SSL/TLS are omitted here.

server {
  listen [::]:80;
  listen      80;
  server_name domain.tld www.domain.tld;

  # Redirect all non-https requests
  rewrite ^ https://$host$request_uri? permanent;
}

server {
  listen [::]:443 default_server ssl http2;
  listen      443 default_server ssl http2;

  server_name domain.tld www.domain.tld;

  # Certificate(s) and private key
  ssl_certificate /etc/ssl/domain.crt;
  ssl_certificate_key /etc/ssl/domain.key;

  # openssl dhparam 4096 -out /etc/ssl/dhparam.pem
  ssl_dhparam /etc/ssl/dhparam.pem;

  ssl_protocols TLSv1.2 TLSv1.1 TLSv1;
  ssl_prefer_server_ciphers on;
  ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-A
ES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS';
  ssl_session_cache shared:TLS:2m;

  # OCSP stapling
  ssl_stapling on;
  ssl_stapling_verify on;
  resolver 8.8.8.8;
  # enable if available
  #ssl_trusted_certificate /etc/ssl/ca-bundle.crt

  # Set HSTS to 365 days
  add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
}